Arrangement for converting two single-phase alternating currents

Details Arrangement for converting two single-phase alternating currents Arrangement for converting two single-phase alternating currents

1990-10-16

1992-01-28

Skudy, R.

Electric power conversion systems

Current conversion

Having plural converters for single conversion

363153, 307 72, H02M 500

Patent

active

050848127

ABSTRACT:
In order with a low degree of equipment complexity to convert two alternating-currents of 16 2/3 Hz of two separate single-phase generators (G1, G2) of approximately the same power into a three-phase current with 50 Hz, the single-phase generators are connected via a SCOTT transformer (Tr1) to a rectifier (SR1) of a converter with a direct-voltage intermediate circuit (3-6). The direct current transmitted through the direct-voltage intermediate circuit is transformed into three-phase current by two inverters (SR2, SR3) connected in series, and supplied to a national power system (10) via power transformers (Tr2, Tr3). The two single-phase generators (G1, G2) are controlled by one generator voltage controller (42) in each case, which affects the excitation of the single-phase generators (G1, G2) via a field rectifier (43), at the same amplitude of their generator voltages (u1, u2). Moreover, the single-phase generators (G1, G2) are controlled at a phase shift of their generator voltages (u1, u2 ) of 90.degree..sub.el by a load angle controller as a function of the load angles (.delta.1, .delta.2). For this purpose, desired-value signals (P1.sub.s, P2.sub.s) are formed by a turbine balance controller in order to control the fuel supply of turbines (Tu1, Tu2), which drive the single-phase generators (G1, G2).

REFERENCES:
patent: 3781641 (1973-12-01), Rettig
patent: 4625269 (1986-11-01), Kangiesser
patent: 4639610 (1987-01-01), Del Vecchio et al.
patent: 4648018 (1987-03-01), Neupauer
patent: 4800481 (1989-01-01), Knaffl et al.
"Digitale Untersuchung der Stabilitat von gleichstromgekoppelten Drehstromsystemen", Schmidt, MSR 15 (1972), pp. 296-299.
"Entwurf eines Leistungsreglers fur Moderne Netzkupplungsumformer", Von Gerhard, Heft 10 (43 Jahrgang 1972) Elektrische Bahnen, pp. 224-230.
"Berechnungen und vergleichende Messungen am System Stromrichter-Synchronmotor", Meyer et al., Brown Boveri Technik 2-85, pp. 71-77.
"Stromrichtererregung fur schnell-laufen Synchrongeneratoren", Gerlach, Techn. Mitt. AEG-Telefunken 68 (1978), pp. 57-66.
Patents Abstracts of Japan, E761, May 22, 1989, vol. 13/No. 218, "Generator Optimum Stabilizing Control Method", Mizutani.
"Begrenzung der Erregung von Synchronmaschinen", Eggeling, Brown Boveri Mitt. 11-76, pp. 682-687.
"Polradwinkelregelung fur Synchronmaschinen", Von Dietrich Ernst, et al., Elektrizitatswirtschaft, Jg. 64 (1965), pp. 121-127.
Taschenbuch Elektsotechnik, Bond 5, VEB Verlag Technik Berlin, 1980, Prof. Dr. Eugen Philippow, pp. 835-836.
"Handbuch fur Hochfrequenz-und Elektro-Techniker", Fachworterbuch, pp. 618-619.
"Programmable Processor for the Control of HVDC and SVS", Stemmler et al., Canadian Electrical Association Meeting, Mar. 25-29, 1984.

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